Brake-band-adjusting device



March -15 1927. 1,621,004

J. A. DOMMER y BRAKE BAND ADJU$T1NG DEVICE Filed AWA, 1925 PatentedYMar. 15, 1927.

' `JOHN enormen, or EUCLID, roHro.

`islaam:Llaman-Anmsfrrlxu DEVICE.

Application filed August 4, 11925. 'sena-1 no. 48,157.

This invention relates to brake band adjusting devices `especiallyadapted for use on Ford transmissions. h

One of the objects vof thisy invention 1s to provide simple meanswhereby the `bands may be yoccasionally adjusted from a pointeXteriorlyof :the transmission so that when 4it is desired to make anadjustment 1t is not necessary to remove the inspection plate. 1o Itwill thus be seen that a brake bandl a'djustifng device constructed inaccordance with this invention'- mayv be adjusted from time to time asthe-occasion requires by one having little yor no mechanical experience.

is to provide a brake band adjusting device which may be incorporated ina. standardy transmission `without materially altering the constructionor designl thereof.

`2o Another objectof this 4invention is to provide a brake bandadjusting device whichisof highly simplified construction, durable inuse, and cheap to manufacture.

Other objects and advantages will be apparent during the course of thefollowing description.

In the accompanying drawing forming a part of this application and inwhich like numerals are employed to r designate like parts throughoutthe same,

Figure --1 is a vertical sectional viewf through the improved brake bandadjusting device applied, the band being shown in its expandedposition.; 1

Fig. 2 isa side elevation of the improved brake band adjusting device,parts being broken away, andthe band being shown contracted;

Fig-3 is a. perspective of a bushing embodied in the invention.

' -Inthedrawing wherein for the purpose of illustration is shown apreferred embod' innen-tV ofthe invention, the numeral 5 designates aFord automobile transmission housvV ing, withln which bands 6 of theusual number and Size are located. Itis well known that Also, animportant aimfof this invention' vrotatably mounted on the bushing21 andsure on the pedal 9 the spring 8 willhold the band in its expandedposition.

j Fig. 1 illustrates that a yshaft 10 is -extended 'through the ears 7and the sprir'igl 60 and has its inner end provided with a castel-vlated nut 11 securely held inv place by means of a cotter key 12j. 4Theaddition `of the iinproved adjusting mechanism vovercomes lthe ne-ed ofperiodically turning the nut'11 andv thus itis proposed to lockthe samein place on the shaft 10 by means ofthe cotter key just described. v y'l The shaft 10 is substantially longer than theshaft ordinarily employedfor adjustino'y the bands and has its out-en end square@ 'i as indicatedat 14 for engagement with the jaws yof a wrench orvthe like. Inladdition to thisthe squared outer end of' the shiaft may be providedwithal transverse notchl 16 for the reception of a screwy driver bymeans of which the shaft may be securely held against'turningvduring theadjustnient of anut 18. The nut 18, which is threaded on the lshaft 10,is :engaged with the flanged outer end 2.0 of a busl'1ing21. The bush'-ing 21 extendsthrough ,the boss 22 of they 4transmission cover androtatably supports the shaft 10 with a-minilm'um of friction. u Theypedal 9 vis -provided'wi'th 'a hub 26 having the usual cam' edge ormember 28 which coacts'with asimilar cam edge on the boss 22 whereby thedepressionof the pedal 9'results in the transverse movement of the' hub26. VV'henv the hub 26 is thus moved transversely `the vflange 20f'willbe moved in the same direction andthe shaft 10 will be moved lengthwise.for contracting the band. In carrying out the invention a lock nut, 29is threaded on thef'shaft 10 immediately behind the nutv18 and is.adapted tfbe tightly engaged with ythe nut-18 tohold the same .againstloosening when the latter. is finally adjusted. f l

It will be apparent that the bushing` 21 supports the shaft 10 forrotation and at lthe same time extends beyond` the lboss 22` forrotatably supporting the hub 26. This arrangementgreatlyv expedites theoriginal assembling of the parts and provides aconstruction which iseasily maintained, ad.

justed, or repaired as the occasion requires. The employment of theimproved adjusting device makes it unnecessary to remove the inspectionplate when it is desired to tighten or loosen the bands, Particularattention is directed to the fact that the operator may hold a screwdriver or other tool in one hand and thereby hold the shaft 10 againstturning, While a wrench is held in the other hand of the operator toadvance the nut 18. This greatly expedites the tigl'itening of the bandsas both hands of thev operator are reasonably close together' and at thesame time do not conflict.

The invention forming the subject matter of this application is capable'of a wide variety of mechanical expressions and it is, therefore, to beunderstood that the form of invention herewith shown and described is tobe taken merely as a preferred example of the same and that Vsuch minorchanges in arrangement and construction of parts may be made as willremain within the spirit of the invention and the scope of what isclaimed.

Having thus described the invention, what is claimed is: n n l. Thecombination of a transmission cover' having a boss, a bushing ofelongated formation extended through the boss and having the outer endthereof provided with an annular flange, a pedal having a hub rotatablymounted on the bushing between said boss and said flange, a shaftrotatably extending through said bushing and terminating beyond oppositeends of the same,

and a nut threaded on said shaft and en-y gaged with said annular flangeof the bush-k inff. f

lThe combination of la transmission cover having a boss, a bushing ofelongated formation extended through the boss and having the outer endthereof provided with an annular flange, a-pedal having a hub rotatablymounted on the bushing between said boss and `said flange, a shaftrotatably extending through said bushing and terminating beyondoppositeends of the. same, and a nut threaded on said shaft and engaged withsaid annular flange of the bushing, the outer portion of said shaftbeing squared for engagement by a wrench whereby a wrench in one hand ofthe operator may be employed to hold the shaft against turning while awrench in the other hand of the operator may be employed to adjust saidnut, said squared end of the shaft being adjacent said nut whereby bothhands of the voperator are close together.

3. The combination lof a transmission cover having a boss, a bushing ofelongated formation extended through the boss and having the outerendthereof provided with an annular flange, a pedal having a hubrotatably mounted on the bushing between said boss and said flange, ashaft rotatably extending through said bushing and terminating beyondopposite ends ofthe same, a

nut threaded on said shaft and engaged with said annular flange of thebushing, the outer portion of said shaftbeing squared 'for engagement bya wrench whereby` a wrench in one hand of the operator may be i employedto hold the shaft against turning while a wrench in the other hand of,the operator maybe employed to adjust said nut, said squared end oftheshaft being adjacent said nut whereby both hands of the operator areclose together,y and a lock nut extending through saidbushing andterminating vbeyond opposite ends of the same, a nut threaded on saidshaft and engaged with said annular flange of the bushing, the outerportion of said shaft being squared for engagement by a wrench whereby awrench in one hand of the operator maybe employed to hold the shaftagainstturning while a wrench in the other hand of the operator may beemployed to adjust said nut, said squared end of the shaft beingadjacent said nut whereby both hands of the operator are close together,a lock nut threaded on said shaft outwardly of "said first-named nut,and a castellated,4 nut threaded on the inner end of said shaft, therebeing means -to hold the. castellated nut against turning;

In testimony whereofl alx my signature.-

VJOHN'A. DOMMER.

